ELECTROPHORETIC PARTICLE, ELECTROPHORETIC PARTICLE DISPERSION LIQUID, DISPLAY MEDIUM, AND DISPLAY DEVICE

• US 20130222888A1
• Filed: 12/19/2012
• Published: 08/29/2013
• Est. Priority Date: 02/27/2012
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation), Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation), Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: URANO, Chisato, MORIYAMA, Hiroaki, YAMAMOTO, Yasuo, SATO, Tadanobu
• Application Number:
  US13/719,614
• Publication Number:
  US 20130222888A1
• Time in Patent Office: Days
• US Class Current: 359/296
• CPC Class Codes: G02F 1/167 by electrophoresis
• CPC Class Codes: G02F 2001/1678 characterised by the composition or particle type

Abstract

There is provided an electrophoretic particle which contains a polymer and a coloring agent, wherein the total content of a calcium element and a sodium element or a magnesium element and a sodium element is about 0.1% by mass or less, an electrophoretic particle dispersion liquid which contains a dispersion medium and the electrophoretic particle dispersed therein.

Claims

1. An electrophoretic particle comprising:

a polymer and a coloring agent, wherein the total content of a calcium element and a sodium element or a magnesium element and a sodium element is about 0.1% by mass or less.

2. An electrophoretic particle dispersion liquid comprising:

a dispersion medium and

an electrophoretic particle dispersed therein, wherein the electrophoretic particle is the electrophoretic particle according to claim 1.

3. A display medium comprising:

a pair of substrates at least one of which has a light-transmitting property, and

the electrophoretic particle dispersion liquid according to claim 2, which is enclosed between the pair of substrates.

4. A display medium comprising:

a pair of electrodes at least one of which has light-transmitting property, and

an area having the electrophoretic particle dispersion liquid according to claim 2, which is provided between the pair of electrodes.

5. A display device comprising:

the display medium according to claim 3 and

a voltage-applying unit that applies a voltage to between the pair of substrates of the display medium.

6. A display device comprising:

the display medium according to claim 4 and

a voltage-applying unit that applies a voltage to between the pair of electrodes of the display medium.

7. A method of manufacturing an electrophoretic particle, the method comprising:

suspending a polymerization component, a coloring agent, calcium carbonate and sodium chloride or magnesium carbonate and sodium chloride in an aqueous phase,

polymerizing the polymerization component to a polymer,

obtaining the electrophoretic particle which are composed by containing the polymer and the coloring agent,

wherein the total content of the calcium element and the sodium element or the magnesium element and the sodium element is about 0.1% by mass or less.